External form spreader



Oct. 26, 1937. H. H. TOOGOOD 2,096,868

EXTERNAL FORM SPREADER Filed June 20, 1935 i d I 719.17,

jnvcufof I Patented Oct. 26, 1937 UNITED *STATE EXTERNAL FORM SPREADER, Henry Herbert Toogood, Los Angeles, Calif.

Application June 20,

8 Claims.

This invention relates to concrete wall constructions and more particularly to a means for maintaining the concrete forms in spaced apart relation.

An object of this invention is to provide a spreader which is so constructed that it may be applied externally during the setting up of the forms and may be removed in the same manner after the concrete has poured and the wet con- 10 crete reaches the height of the spreader so that when the forms are removed the exterior surface of the concrete will not have to be surfaced in order to cover up the holes formed by the spreader.

A further object of this invention is to provide an externally applied spreader which is so constructed that it can be secured to either the waler, stud or sheathing and, if desired, the spreader can be so constructed as to be adjustable 2 as to length so as to take care of any variations in the configuration of the form.

The above and various other objects and advantages of this invention will in part be described in, and in part be understood from the in elevation of a modified form of this spreader.

Figure is a top plan of a further embodiment 40 of this invention. 7

Referring to the drawing wherein like numerals of a reference designate corresponding parts throughout the several views,.the numeral I0 designates generally one side 'of a form and the 5 numeral H designateslan opposing form which is spaced apart from the form In. Each form is of substantially similar construction comprising a sheathing I2 to which studs l3 are secured, the studs being substantially Vertical or at right 50 angles to the lengths of the boards forming the sheathing I2. In order to further reinforce the forms, Walers M are secured tothe outer edges of the studs Band at right angles to the lengths of the studs l3. These forms l0 and H are of 25-5 conventional construction and are here shown as following detail description of the present pre- 1935, SerialNo. 21, 00

only one type of concrete form construction with which the hereinbeforev described spreader constructions may be applied. 7 Y

It has been the practice in building constructions where walls are formed of concrete to in- 5 sert between the forms spreading members constructed either of wood or metal and it has also been the practice to leave these spreader members embedded in the concrete wall or to withdraw the spreaders after the concrete has set andthen l0 plug ,up the holes formed by removal of the spreaders. In the latter case it is necessary to go over the surface of the concrete by erecting scaffolding and in many instances, the spreaders are damaged in the removal thereof or the forms are injured by contact of piercingpoints carried by the spreaders. It is, therefore, an object of this. invention to provide a spreader to hold the forms I0 and H in spaced apart relation which can be applied from the exterior of one or the other of .the forms and which can be removed during the pouring of the concrete, that is, when the level of the concrete reaches the spreaders or while the concrete is still in liquid form.

In this manner the moist concrete will fill up the holes formed by removal of the spreaders and the exterior surface of'the wall will not show any holes requiring'filling up after the concrete has set. At the: present time it is deemed desirableto form concrete walls of monolithic construction andto leave the surface of the walls in their original condition, this being particularly desirable in regions subjected to earthquakes, or like tremors. 1

In order, therefore, to provide a spreader which will accomplish the results hereinbefore described, I have'iprovi'ded an elongated bar l5 which may be of desired configuration transversely, that is, either round, rectangular or any other suitable configuration. The inner end l6 of this spreader rod I5 is adapted to abut against the inside of the face form H and is adapted to project through a hole I! provided in the sheathing 12 of the form l0. 1

'Ifheouter end of the rod I5 is secured to'an attaching plate, as by welding 19 'orthelike. This attaching plate I8 extends parallelto the longitudinal axis of the rod l5 and is of a width in excess of the bottom of said rod and is provided in its excess marginal portions and preferably on both sides of the rod, with holes2l 56 through which fastening devicesZZ in th for'm of double-headed nails, are adapted to extend'jto secure the plate to a studor waler. The inner end 20 of the plate l8form's an abutmentad'apted to eng ge against theouter sideofth'esheathing'iit 7 holes 2|b'is fastenedto the cylindrical nut 31 l2 or stud l3, and the plate l8 projects beyond As shown in Figure 1 the plate I8 is secured to a stud [3 but, if desired, the plate I8 may be secured to a waler M, as shown in Figure 2, in

which event the rod'l5 will, of course, be made longer so that when it is in applied (position the two forms If] and II will be maintained in the predetermined spaced apart relation. If desired, the spreader member comprising the rod l5 and the plate I8 may be formed in a slightly different manner, that is, the abutment 20 may-be-made integral with the rod l5. 1 V

In Figure 4, there is shown a modified form of this invention where the spreader rod |5a is adapted to be secured to the sheathing l2a. 'In this construction, the abutment is formed by'a substantially L-shaped plate l8a which has one leg 24 welded as by welding 25 to the rod l5a and thefother leg 26 is provided with suitable holes I'Itorecive nails or fastening devices 28.

In Figure 5 there is shown'a further form of this invention Where the spreader rod I5!) is threaded, as at 29, for a considerable portion of its length and, the outer end of the rod l5b is provided with'a head "Which may be engaged by a wrench or other tool. 7 A cylindrical interiorly threaded member 3| is threaded on to the rod I5b exteriorly of the sheathing 12b and a base plate 18b provided with suitable as 'by welding or other suitable means. The plate "lab in this instance is secured by nails or fastening devices 32 to a stud I327." In the use -of the spreader. 15b the rod is adjusted sothat the inner end l6b will engage the opposite form and when the two forms are in the desired spaced apart relationa lock nut 33 is tightened and engages against the outer end of the fixed nut 3| secured to the plate l8b.

In the use and operation of the spreader hereinbefore described wherein the spreader as shown in'Figure 1 is used, the sheathing I2 is drilled with the desired size hole and the abutment 20 carried oby the plate flatis adapted 'to engage against theouterside of the sheathing I2. The inner end l6 of the spreader I5 ,will contact with the inner side-of the form II and the nails or fastening devices 22 will be secured to either the stud I3 or the waler I4. During the pouring :of the'concrete, the spreaderswill be left in applied position until the moist concrete reaches substantially the level of'the spreader l5 whereupon the nails 22 willrbe withdrawn and a sultable tool or implement applied to the hook '23 so as to pull 'the'spreaders l5 out of thersheath ing l2. v 7

It willpof course, be understood that these spreaders I5 may be left in the form until they 1 are substantially embedded in the concrete and then removed with the concrete still in a suf ficiently moist condition so 'thatfthe concrete will fillup the holesformed by the withdrawal ,of the spreaders 15. These spreaders will not'be injured inany manner by their application-to the forms and can,therefore, be used over and over again and,' where desired, in the event the are; ti ei liq eei a n far s in, s a ed apart relation'with the space less than the distance between the abutment 20 and the inner end 16 of the rod I5, allowance being-made for the thickness of the sheathing l2, the plate l8 may be moved outwardly on the face of a stud l3 or waler M in which case therabutment 20 will not contact with the outer side of the sheathing it It will be apparent from this that one particular length of spreader may be used for different widths of walls.

I claim:- V 1. A form spreader comprising a relatively rigid elongated bar adapted to extend" freely through one wall of a form into abutting rela- -tion with the opposite'wall of the form, a plate fixed to said bar at one end thereof and in overlapping relation to said end, said plate extending parallel to the longitudinal axis of the bar whereby its inner end will form an abutment for the purpose described, said plate being of a width in excess of the diameter of said bar and formed on opposite sides of said bar with holes for the reception of fastening devices. 7 v V 2. A form spreader comprising a relatively rigid elongated bar adapted to extend freely through one wall of a form into abutting rela tion with the opposite wall of the form, a plate fixed to said bar at one end thereof and in overlapping relation to said end, said plate extending parallel to the longitudinal axis of the bar whereby its inner end will form an abutment for the purpose described, said plate being of a width in excess of the diameter of, said bar and formed on opposite. sides of said bar with holes for the reception of fastening devices, the outer end of said plate being turned upon itself to form a hook.

, 3. A form spreader comprising a substantially rigid elongated'bar adapted to extend through one Wall of a concrete form with one end thereof abutting against the inside face of the opposite wall ofthe form, and a combined abutmentand bar holding plate weldedto a. side of the bar adjacent the other or outer end, said plate being provided with holes on opposite sides of the bar and having a portion thereofprojecting beyond the outer end of the bar and terminating in a reverted hook-shaped end confronting the outer end of the bar.

4. A form spreader comprising a substantially rigid elongated bar adapted to extend through one wall of'a concrete form with one end there- 'of abutting against the inside face of the opposite wallof the form, and a combined abutment and bar holding plate welded to said bar adjacent the other or outer end, said plate being provided with holes therethrough to receive fastening devices; whereby the plate may be securedfiat against a portion of the bar. 5. A form spreader comprising a substantially rigid elongated bar adaptedto extend through one form in parallel relation to; said wall of a concrete form withone end thereof abutting against the inside face of the opposite wall of the form, and a combined abutment andbar holding plate fixed to aside of the bar adjacent the other or outer end, said plate being provided with'holes to receivefastening devices whereby said plate may be detachably. secured to said one walloftheform.

' 6.A form spreader comprising a substantially rigid elongated bar adapted .to extend through one wall of a concreteform with one end thereof abuttingiagainst the inside face of the oppo- "site wall of the form, and a combined abutment and bar holding plate having one side thereof fixed to a side of the bar adjacent the other or outer end thereof, and a lateral extension integral with said plate, said extension being provided with holes to receive fastening devices to secure said extension in face abutting relation to a side of the form.

7. A form spreader comprising a substantially rigid elongated bar adapted to extend through one wall of a concrete form with one end thereof abutting against the inside face of the opposite wail of the form, and a combined abutment and bar holding plate having one side thereof fixed to a side of the bar adjacent the other or outer end thereof, and a right angularly disposed extension integral with the inner end of said plate,

said extension being provided with holes to receive fastening devices to secure said extension in face abutting relation to a side of the form.

8. A form spreader comprising a substantially rigid elongated bar adapted to extend through one wall of a concrete form with one end thereof abutting against the inside face of the opposite wall of the form, and a combined abutment and bar holding plate fixed to said bar and extending laterally thereof at right angles to the length of the bar, said plate being provided with holes to receive fastening devices to secure said plate in face abutting relation to a side of the form.

HENRY HERBERT TOOGOOD 

